DE10196551T5 - Door control device - Google Patents

Abstract

Facility comprehensive:
a brake actuator for releasing a brake when the brake actuator is moved;
an extensible connection which assumes a normal length and an extended length when an external force is exerted thereon, the connection comprising a first end which is connected to the brake actuator and a second end which is connectable to a fire condition detection device, which releases the second end in a fire indication condition and the brake actuator releases the brake when the fire condition detector releases and moves the second end of the link so that the brake is released when the link takes on its stretched length , but does not release the brake if the connection is of normal length and the second end of the connection is not released via the fire condition detection device;
a solenoid (126) containing a moveable plunger, the moveable plunger transmitting the external force to the connection so that the connection takes on its stretched length and thereby movement ...

Description

The invention relates to a Control device for closing and opening a door. In particular The present invention relates to devices that different control operations a door facilitate.

Doors are known from the prior art, the dependent connect from a certain condition, such as fire doors. A Fire door serves as a barrier against the spread of fire, smoke or vapors through an opening or a passage inside buildings or an outside wall. Fire doors can be in Ceilings, walls or floors of buildings be included and close down, sideways or upwards, to automatically indicate the passage when a fire breaks out Condition, such as excessive heat or smoke, close.

A fire door designed as a roller door includes generally a variety of interconnected fire-resistant slat elements, which on a rotatable tube above or below the in nearby of the passage are recorded. Fire doors can also be trained otherwise become. For example, a fire door can also be used as a fixed unit or as a combination of rollable elements and fixed elements be trained. Roll-up fire protection doors above the passageway are included as well as other configurations of fire doors Have weight between a few 100 kg up to more than 500 kg.

Some types of fire doors are designed to be open before the occurrence of a Fire is detected. Other fire doors are operated, i. H. opened and closed, which is often done for security and environmental reasons. These latter fire doors are generally motorized or include a manually operated Pull chain to open or close the fire door facilitate. Almost all fire doors include one or more Fire detectors, which are closing the fire door trigger, when excessive heat is recorded. Some fire doors are in turn with smoke detectors or or smoke alarm devices connected so that the fire door is dependent on excessive smoke or dependent is closed by a fire alarm.

Fire doors that can be rolled up are generally divided into four categories: manually slidable Fire doors; manually operated fire doors with chains; non-automatic actuable by an electric drive resettable Fire doors as well as electrically driven, automatically resettable fire protection doors. each the enumerated Categories has special, type-dependent disadvantages. The former three categories are all older Date and have essentially the same disadvantages. The latter Category, on the other hand, represents a newer variant, the turn various disadvantages and which are discussed briefly below.

Since the occurrence of a fire condition is often associated with a loss of electricity supply, fire doors generally close due to gravity, with the exception of fire doors which are of lightweight construction and in which a spring element is provided to exert an additional closing force on such fire doors. Lateral closing, upward closing and flat closing fire protection doors also require spring elements in order to generate a force in the closing direction on the fire protection door. Various devices and mechanisms are already known for slowing down and controlled closing of a fire door, such as friction brakes, torsion springs wound in opposite directions, pawl systems and hydraulic brake systems, for example according to US 5,002,452 , Controlling the closing speed of a fire door is important because fire doors with closing speeds in the range between 0.15 m / s and 0.6 m / s have to close in accordance with the relevant fire protection regulations.

Electrically powered fire doors as well the manually operated Pull chain configuration include a mechanism, generally a Gearbox, which over a separable fire alarm chain is held in position. The gear / gear extends the drive gear train or the pull chain - if excessive heat is detected will - so the fire door independently can close from the drive or the lifting or lowering mechanism. The fire alarm chain is required to test fire protection doors of this type to solve, so that the gear extends.

A qualified mechanic is required to reset the fire protection door after performing a fire alarm. Access to the facilities is often limited, for example if the mechanic has to work under a ceiling in the middle of cables, wires or tubes. Therefore, testing and resetting a fire door can be an expensive procedure. Fire protection devices prescribe annual testing of fire protection doors. Furthermore, monthly testing is required in many production halls, as this is required by insurance companies. The prescribed testing is not only expensive, but also a lengthy undertaking with regard to monitoring the test run itself and resetting the fire protection doors.

An additional disadvantage of the facilities mentioned is their common Failure in many ways. For example, fire doors close at all not, so when a fire occurs insurance companies high damage arise. Another example is that the facilities mentioned often the closing speeds the fire doors cannot control exactly, so the fire door hits the ground what damage the fire door entails and represents a significant risk to people who are endure beneath a moving down fire door. Repairing a damaged one Fire door elevated the cost associated with a fire door test and increases the unavailability one to be repaired and returned to its original position Fire door.

An electrically powered, automatically resettable Fire door can be tested without interrupting the fire alarm chain. This type of fire doors includes a brake operated by centrifugal force. This type of Fire doors has no overspeed protection on and the engine behaves like a freewheel, which even increases the over-revving. The engine can reach speeds of up to 1800 n / min, causing damage the upper lath-shaped Rolling elements of the fire door, occur especially with smaller fire doors after only a few test procedures can. Furthermore, there is no control of the closing speed Fire door except the closing speed determined by the centrifugal brake given because this type of fire doors on an operation without Power supply is designed.

With the type of fire protection doors that use of an electric drive and are driven automatically resettable is a constant power supply to the drive control mechanism required to keep the fire door open. If the power to the drive control mechanism is interrupted, includes the fire door automatically, even if the power supply is interrupted only briefly will, such as during a power failure. If the power supply remains interrupted, this type of fire doors don't reopen for example for forces or as an emergency exit. A possibility, To overcome these drawbacks is to have your own battery-powered one Power supply system for to provide the drive control.

Another disadvantage of means actuated an electric drive Fire doors is the requirement of a constant voltage AC source. AC transmitting Lines must to every fire door. This is a complex installation. For example, exceed the costs in department stores, where only one 277 volt voltage system is installed to maintain additional Power supply lines to fire door controls the cost of Fire doors in itself by far. The alternatives to these motorized Types of fire doors are manually operated Fire doors (the first two listed Types), which in turn are difficult to test and in their Starting position resettable are as described above.

Both motor driven types of Fire doors (the third or fourth category of fire doors listed above) closed by means of the electric drive or moved down. Because this type of door controls are designed to fire protection doors in their open position These drives have to move, whereby springs are relieved a sufficient torque that damage the slat elements or in extreme cases even destroy it can, if the guide rails the fire doors jam or a complete downward movement in the closed position not possible is. The drives run until a lower limit position is reached, but the fire door is still in its open position remains so the slat-shaped Elements are twisted, jammed or broken. These appearances can also occur with other types of roll-up door elements, such as Security grilles and the like.

In summary, the main disadvantage of the fire protection doors known from the prior art is the fact that they are difficult or impossible to open when closed as an emergency exit or make access for emergency responders or equipment impossible. The electrically driven types of fire protection doors can be opened, but only if the power supply is available, which is not always the case. If firefighters cut an opening through the fire door to gain access and fire, the encapsulation of the source of the fire is lost and the source of the fire can no longer be sealed off. Mechanically powered fire doors are prone to failure, and testing and resetting them is an expensive procedure because these mechanisms are generally very complex and access to the operator mechanisms is rather tedious. Electrically powered fire doors are easier to reset, but they are generally more expensive to install. A continuous AC power supply is also required to keep the fire door open (alternatively, an expensive, battery-powered, independent power supply). In the event of an interruption in the power supply, the closing speed of such fire protection doors This inevitably leads to damage to the floor in the area of the fire door or to injuries to people who endure in this area. When driving fire protection doors into their closed position and damaging the fire protection door, the applied engine torque inevitably leads to damage to the guide rails guiding the fire protection door. Once closed, the fire doors cannot be easily opened again for emergency services.

Object of the present invention it is therefore the devices known from the prior art to improve on the drawbacks of this from the prior art known solutions inherent to clear out. Another object of the present invention is that a heat or smoke activated device that provides a fire alarm connection includes, about which the fire door actuated is provided, the device without interruption of the Fire alarm connection can be tested and each closing of the Fire door represents a test of the facility.

Another task of the present Invention is an improved control system for everyone Type of an automatic closing Provide door, which opened closed, tested, deferred and can be controlled without a hard-wired Energy source. Another object of the present invention is in providing a device that produces that generated by a closing door Controlled energy, so that a controlled closing of the Door is reached. Furthermore, an object of the present invention is a device to provide the energy generated by a closing door for drives for actuating processes from Makes auxiliary drives usable. Another goal of the present The invention is to provide an improved device which enables control of the closing speed of the door. Another object of the present invention is to see the reset properties a non-powered door to improve. Finally it is an object of the present invention to control properties a motorized door to improve.

Other goals and the entire scope the proposed according to the invention solution are clarified in more detail using the following description. However, it should be noted that the detailed description as well the examples used, referring to preferred embodiments the present invention solution are given for illustration purposes only.

The present invention is based on explained in detail in the description given below and described in more detail with reference to the drawing.

It shows:

1 2 shows a perspective representation of one side of a downwardly movable fire door according to the present invention,

2 a perspective view of the other side of the fire door according 1 .

3 3 shows a cross section of the drive mechanism of a fire door from an overhead position,

4 a cross-sectional view along the line 4-4 according 3 .

5 a cross-sectional view along the line 5-5 according to 3 .

6 a representation of a closing actuation mechanism according to the 3 and 4 on an enlarged scale,

7 an electrical circuit diagram of a control system for the fire door,

8th a cross-sectional view of a sensor strip which is attached to a leading end of a fire door and

9 a circuit diagram of an alternative embodiment of a control system for the fire door.

variants

1 and 2 represent a fire door according to the present invention. 1 is the fire door 10 shown in an open first position while 2 the fire door 10 in a closed, second position.

The features of the fire door will follow 10 , which is generally used in accordance with the solutions known from the prior art, briefly described. The fire door 10 is provided around a passage or through opening 12 if necessary, to block the by a frame 14 is defined. At the passage opening or the passage 12 that is shown is one that a person or vehicle can pass through. At the passage 12 or the through opening can just as well be an external window, a double window or another through the fire door 10 act opening to be closed.

Although in connection with a fire door 10 shown and described, the solution proposed according to the invention can equally be used on any type of door, such as a security grille comprising open sections, which, for example, closes a customer counter or a door serving as storm protection for a window or a garage door. In the following, the term "door" as used in the claims is understood to mean a multitude of structures which can be moved in order to restrict or prevent access or view through an opening, a hole, a passage or the like.

The fire door 10 includes a variety interconnected slat-shaped elements 13 which are used to achieve vertical movement in right and left guide rails 16 . 18 are led. If the fire protection door is in its open position, the strip-shaped elements are 13 on an elongated tube 22 rolled up, (compare 3 to 5 ) and within a cover 20 added.

At the right end of the cover 20 can optionally have a spring housing 23 be included. The spring case 23 encloses an auxiliary spring, not shown, which with the elongated tube 22 connected is. The auxiliary spring element can hold potential energy when the fire door is closed 10 save and save this when opening the fire door 10 to be released again, so that the operator is supported when opening the fire door 10 is achieved. Alternatively, the auxiliary spring can use potential energy when opening the fire door 10 to save and release this potential energy when the fire door closes, so that the fire door is supported in its closed position by gravity. Although the spring on one side of the elongated tube 22 is shown lying, the spring can just as well in a hollow elongated shaft 22 be added, eliminating the need for a spring box 23 eliminated.

At the left end of the cover 20 is a housing 24 arranged for a mechanical drive. A first chain 26 extends from the top of the case 24 of the mechanical drive. The first chain 26 is under tension with a first fire alarm 28 connected. The first fire alarm link 28 is under tension with a first ceiling shot 30 over a second chain 32 connected. A third chain 34 is with the first fire alarm 28 connected and extends through the wall. On the other side of the wall is the third chain 34 with a second fire alarm 36 connected. The second fire alarm 36 is on a second ceiling mount 38 under tension using a fourth chain 40 added. The purpose of the first and second ceiling shots 30 . 38 and the first and second fire alarms 28 . 36 is to detect a fire indicating condition and sag of the first chain 26 which in the housing 24 of the mechanical drive, if a fire occurs. For example, excessive heat build up on one side of the in 2 Fire door shown for melting the first fire detection element 28 lead and a slack of the first chain 26 cause which is partially in the housing 24 of the mechanical drive. Excessive smoke on the in 2 illustrated side of the fire door 10 or a general fire alarm, will release the second chain 32 through the first ceiling shot 30 so that the first chain 26 also sags and the first chain 26 also partially in the housing 24 of the mechanical drive. Further details of such fire condition sensors can be found in the prior art, for example US 4,147,197 remove.

Below are the arrangements according to the 1 and 2 , which relate to the present invention, described in more detail. A first control panel 42 is on a wall next to the fire door 10 open. The first control panel 42 has a first switch 44 for resetting or opening the fire door 10 on, also a second switch 46 for testing or closing the fire door 10 as well as a first connection or an electrical connection point 48 to accommodate a second terminal 50 a rechargeable battery 52 , A second control panel 54 which has a third switch 56 , a fourth switch 58 as well as a third electrical terminal 60 is next to the fire door 10 taken on the other side of the wall and has the same functions. To reduce costs, one of the first and second control panels is conceivable 52 . 54 save, whereby the advantages associated with the solution according to the invention are largely retained.

A manually operated release button 62 is at the bottom of the case 24 arranged of the mechanical drive. Pulling the manually operated release button 62 leads to a test or a closing of the fire protection door 10 , Optionally, in the walls next to fire doors 10 optical display devices 64 be included. The optical indicators 64 light up, for example, or send light beams when the fire door is tested or closed. The optical display devices 64 may have warnings, such as "fire", "closing" or "caution" or the like. Furthermore, acoustic display devices can optionally be used 66 on the walls next to the fire door 10 Arrange. The acoustic indicators 66 send acoustic signals or alarm signals or via this a saved announcement can be broadcast when the door is tested or closed.

Regarding the 3 to 5 are now the components of the in the housing 24 arranged mechanical drive described. These include a DC powered motor / generator 68 , The motor / generator 68 drives a first gear 70 over a wave 130 on. The first gear 70 drives a second gear 72 over a first chain 74 , The relative size of the first gear 70 and the second gear 72 determine a reduction ratio.

The second gear 72 is on a first wave 76 recorded and rotated with this. A brake disc 71 an activatable or deactivatable stop or braking system 73 is also with the first th wave 76 connected and rotated in the same direction with this. A third gear 78 is on the first wave 76 recorded and rotates also with this. The third gear 78 stands over a second chain 82 in drive connection with a fourth gear 80 , The relative sizes of the third gear 78 and the fourth gear 80 lead to a further reduction in speed.

The fourth gear 80 is on a second wave 84 recorded and rotated in the same direction with this. A fifth gear 85 is also on the second wave 84 recorded and rotated in the same direction with this. The fifth gear 85 drives over a third chain 88 a sixth gear 86 , The relative sizes of the fifth gear 85 and the sixth gear 86 lead to a further reduction in speed. The fifth gear 85 continues to drive using a fourth chain 92 a seventh gear 70 ,

The sixth gear 86 is with the elongated tube 22 connected and rotates in the same direction with it. The interconnected strip-shaped elements 13 the fire door 10 are, as already mentioned above, on the elongated tube 22 either wound up or unwound.

The seventh gear 90 is on a third wave 94 recorded and rotated in the same direction with this. The third wave 94 comprises a thread on its surface along a central section 95 , A sleeve 96 , which has an internal thread, surrounds this on the outside of the third shaft 94 trained external thread 95 , The sleeve 56 includes a stop 98 , which is attached to the outside. The attack 98 is enclosed by a slot in a guide 100 is trained. The slot in the guide 100 prevents the sleeve from rotating 96 in the same direction as the third wave 94 , Due to the engagement of the threaded section 95 the third wave 94 with the internal thread of the sleeve 96 , the sleeve moves 96 in the longitudinal direction along the third wave 94 , the stop 98 in the longitudinal direction within the slot of the guide 100 to be led. The sleeve 96 also includes a nose 102 , which is attached to its outside. The nose 102 moves longitudinally with the sleeve 96 , Along the third wave 94 extends a support 104 , The support 104 includes fastening devices, such as holes, so that limit switches in certain positions on the support 104 which can be absorbed through the nose 102 be operated when the fire door 10 is open or closed to a certain extent. 3 is an illustration of a first limit switch 106 , a second limit switch 108 and a third limit switch 110 to be found at the support 104 are arranged.

In this variant, the first limit switch 106 designed as a single switch, in which both switches are normally closed. Contact the nose 102 the first limit switch 106 both switches of the first limit switch 106 open. At the second limit switch 108 it is a single switch, which is normally open. Contact the nose 102 the second limit switch 108 , the second limit switch 108 closed. The third limit switch 110 is designed as a single switch and normally closed. Contact the nose 102 the third limit switch 110 , the third limit switch 110 open.

6 10 is an enlarged view of an activatable or deactivatable stop / braking system 72 as shown in FIG 4 refer to.

By means of the braking system 71 For example, the movement of the fire protection door is controlled into its open position. In the absence of the braking system 71 the weight of an opened door would be the brake disc 71 turn in the direction of arrow A. The weight of the door in the open position would be the shaft 130 of the motor / generator 68 twist via the intermediate gears, chains and shafts as the fire door moves from its open to its closed position.

The braking system 71 includes calibration devices 112 which to the brake disc 71 have adjustable brake pads. One as a lever 114 trained brake actuator is about a pivot point 116 pivoted. The lever 114 is biased in the direction of arrow B and exerts a force in the direction of arrow C, causing the adjusters 112 in frictional contact with the brake disc 71 be held so that a rotation of the brake disc 71 is prevented. The lever 114 is by a first spring 118 biased towards B, with the first spring 118 on the first chain 26 is attached. The first chain 26 is under tension while in the case 24 of the mechanical drive. The first feather 118 and the first chain 26 represent a first embodiment of an extendable connection.

If a fire occurs, the first chain will sag 26 generated so the lever 114 is pivoted in a direction opposite the arrow B. The lever 114 is pivoted due to its own weight or - in a preferred embodiment - supported by a second spring 120 which with an inpatient admission 122 connected is. The lever moves 114 in a direction opposite to the direction of arrow B, give the adjusting devices 112 the brake disc 71 free, causing the fire door 110 is released and moves into its closed position under the effect of its own weight.

It should be noted that the spring constant of the second spring 120 is less than the spring constant of the first spring 118 , With this configuration, the lever remains 114 in one of the adjustment devices 112 starting position by which the brake disc 71 is held. Becomes a slack of the first chain 26 , which indicates the occurrence of a fire, moves the second spring 120 the lever 114 in release position so that the fire door 10 will close.

If an operator wishes to test the fire protection door manually, the operator has the manual release handle 62 just pull down. The manual release handle 62 is via a link 124 with the lever 114 connected. Will the manual release handle 62 pulled, supported by the link 124 transferred force is the spring constant of the second spring 120 so that the spring constant of the first spring 118 is overcome. Therefore, the lever 114 in the release direction, ie opposite to arrow B, without moving on the first chain 26 a sag occurs. This advantageously allows the fire protection door to be tested 10 without interrupting one of the chains, fire alarm links or smoke detectors that are above the fire door 10 (see. 1 and 2 ) are arranged.

A solenoid 126 is also with the lever 114 via a connecting link 128 connected. Will the solenoid 126 energized, the solenoid 126 pulls on the link 128 , The combination of the forces applied by the solenoid 126 and by the spring constant of the second spring 120 , is sufficient to adjust the spring constant of the first spring 118 to overcome and releases the brake disc 71 , The solenoid 126 is the preferred device for testing or closing the fire door 10 considered. The manual operating handle 62 serves as an emergency operating device for testing or closing the fire door 10 , How the solenoid works 126 is described in more detail below in connection with the circuit diagram 7 described.

With reference to the circuit diagram according to 7 describe new and improved switching operations achievable by means of the present invention.

First, a condition is described in which the fire door 10 is in its open position and an operator tests or closes the fire door 10 wishes to make. The operator guides the wide electrical terminal 50 the rechargeable battery 52 in the first electrical connection 48 the first control panel 42 on. The operator then operates the second switch 46 , Generally the second switch 46 be labeled with the words "test / close" or a similar wording.

At the second switch 46 it is a double switch, in which both switches are normally open. As long as the fire door 10 has not yet reached its closed position, ie the third limit switch 110 remains closed takes place while the second switch is actuated 46 energizing the solenoid 126 , As long as the solenoid 126 remains energized, the connecting link 128 a force on the lever 114 , which is the spring constant of the second spring 120 supported and therefore the spring constant of the first spring 118 overcomes. Because of this, the lever move 114 and the adjusters 112 give the brake disc 71 free. As soon as the brake disc 71 can move freely, the dead weight of the fire door 10 move it to its closed position. Shortly before the fire door reaches the closed position 110 becomes the third limit switch 110 through the nose 102 contacted. Contact the nose 102 the third limit switch 110 its normally closed switch will be opened. When this switch is opened, the solenoid is energized 126 interrupted even when the operator pressed the second switch 46 presses further. If the current supply to the solenoid is interrupted 126 overcomes the spring constant of the first spring 118 the spring constant of the second spring 120 so the lever 114 is moved into a position in which the adjusting devices 112 to the brake disc 71 are employed. The brake system is therefore actuated 73 just before the fire door 10 touches the floor (or in other circumstances, if the fire protection element touches an opposite side). This is a significant advantage since the fire door is closed 10 a significant moment is built up, and this built up moment with the fire door 10 connected overdrive mechanism is capable of, as already explained above in connection with the discussion of the prior art. The third limit switch 108 is used to prevent a "fire door" moving into its closed position 10 , It is also possible to use the fire door 10 to test or close if the operator does not have a rechargeable battery 52 is. In this case, the operator only has the release handle 62 to pull and hold as described above.

Moves the fire door 10 The chains, gears and shafts are driven from their open position to their closed position. Even the wave 130 of the motor / generator 68 is driven while the fire door 10 moves into its closed position. A rotation of the shaft 130 of the motor / generator 68 causes a generator function of the motor / generator 68 so that electricity is generated. Such a motor / generator arrangement 68 can be purchased commercially from Dayton DC Motor, Model No. 4Z 529. The power generated can be used to activate visual display devices 64 and acoustic indicators 66 be used. Furthermore, the electrical power in the motor function of the motor / generator 68 be fed back in such a way that the motor function of the motor / generator 68 the rotation of the shaft 130 counteracts. Such an arrangement is generally referred to as a regenerative brake. A variable resistor 132 can optionally be in series with the display devices 64 respectively. 66 be switched. The variable resistance 132 advantageously serves for the initial compensation and adjustment of the solution proposed according to the invention in order to apply the braking forces generated to the dynamics of the respective fire protection door 10 adapt. For example, the variable resistance 132 set to a relatively high resistance value, so the power supply to the motor function of the motor / generator can be 68 reduce so that regenerative braking is reduced. The resistance value of the variable resistor 132 will be chosen to be relatively high if the control system according to the present invention is used in combination with a relatively light door, such as a lowerable grille, which is used on counters at auto parts stores and the like.

Instead of the variable resistance described here 132 , which is not absolutely necessary for carrying out the present invention, a resistor with a fixed resistance value can be used or it can be the optical or acoustic display devices 64 respectively. 66 inherent inherent resistances.

Additional optical devices 134 can by the generator function of the motor / generator 68 be supplied with energy during the closing process of the fire protection door. For example, as an additional optical device 134 a capacity arrangement to be installed. During the fire door 10 closes, energy is stored in the capacitance arrangement. A power supply for the optical and / or acoustic display devices is provided via the capacitance arrangement 64 respectively. 66 maintained after the fire door 10 closed is. So could the optical display devices 64 for a few minutes after closing the fire door 10 continue to illuminate to provide lighting and pioneering displays for those within the building if the main power source of the building has failed. As another example, the additional ones can be in directions 134 be used for the transmission of messages (paging), via which, for example, a receiving part (pager) of a building manager or of security personnel can be activated. The activation of the receiving part (pager) could serve as an alarm if a certain fire door was closed. Furthermore, the energy generated could be further magnetic coils 126 are fed to the other fire doors 10 assigned. Such a linked arrangement would be used when closing linked fire doors 10 act if one of the linked fire doors 10 closes.

There are a multitude of advantageous possible uses of closing fire protection doors 10 generated energy. Such electrical energy is particularly advantageous because an external AC power source is in the vicinity of the fire door 10 is needed. Will the fire door 10 tested or closed or activated when a fire occurs, electrical energy is provided to supply lighting, alarm devices and signposts. This is associated with an enormous cost saving with regard to the provision of electrical lines which have to be routed to each of the fire protection doors. Even if there is a pipe system, the power supply is often interrupted during a fire. By means of the solution proposed according to the invention, the generator function of the motor / generator can 68 provided electrical power can be used to power alarm devices and the like. The alarm devices therefore remain in operation even when the power supply is interrupted.

As shown in the 1 and 2 can be removed, is a sensor strip 136 at the leading end of the fire door 10 intended. 8th is a cross section through the sensor strip 136 removable. Essentially encloses a flexible membrane 138 an elongated contact switch 140 or a variety of contact switches 140 , Pressure on the leading end of the fire door 10 causes the contact switch to close 140 , As shown in the illustration 7 is the contact switch 140 to one or more of the visual and acoustic indicators 64 . 66 or optional additional facilities 134 or any variable resistor 32 connected in parallel. Closing the contact switch 140 causes a short circuit of the generator function of the motor / generator 68 generated electrical power directly to the motor function of the motor / generator 68 , In this way, more power is fed back and the closing speed of the fire door 10 is therefore reduced. An example of the use of the creep speed is that one below a closing fire door 10 Person passing the fire door moving downward 10 wants to reduce this person only slightly towards the leading end of the fire door 10 has to press. This represents a natural reaction of a person, which is closing the fire door 10 will slow down, ie pushing against the moving door. A person in the building could also try to slow down the door's downward movement if that person was another person closing the fire door 10 approaches to leave the interior of the building in the event of a fire.

Of course, other types of switches or sensor types can be used instead of the contact switch 140 deploy. The flexible membrane 138 For example, could be filled with a fluid and a pressure sensitive switch could increase pressure by contact along any point on the sensor strip 134 to capture. Another example is to use the power generated by the generator function of the motor / generator 68 to use an infrared beam or an electrical eye, which is the threshold of passage 12 scans or the leading end of the fire door 10 scans to provide energy. Each in the movement path of the closing fire door 10 Detected obstacle automatically activates the creep speed of the fire protection door 10 , Creep speed also plays a significant role in preventing over-rotation damage, as discussed earlier. Immediately before the leading end of the fire door contacts the floor, a counterpart, a wall or another structure, the second limit switch 108 through the nose 102 touched. The second limit switch 108 is open in the normal state, but is in contact with the nose 102 transferred to its closed state. Closing the second limit switch 110 causes a short circuit caused by the generator function of the motor / generator arrangement 68 generated electrical power directly with the motor function of the motor / generator 68 , As a result, more electrical power is fed back and the closing speed of the door is reduced immediately before it is fully closed. As already mentioned above, the activation of the brake system is 73 considerably more effective when the fire door is completely closed.

An operator requests the fire door 10 to open or reset, the operator guides the second electrical terminal 50 the rechargeable battery 52 in the first electrical terminal 48 the first control panel 42 on. The operator then operates the first switch 44 , Typically the first switch 44 be labeled "Reset / Open" or another wording. At the first switch 44 is a triple switch, with one switch normally closed and the other two remaining switches normally open.

As long as the fire door 10 has not yet reached its fully open position (ie a switch of the first limit switch 106 is still closed), actuates the first switch 44 a connection of the rechargeable battery 52 on the motor function of the motor / generator 68 ,

Will the motor / generator 68 about the battery 52 is driven, the shaft 130 Rotated and the reduction, which is given by the intermeshing chains, gears or shafts, the slat-shaped elements 13 the fire door 10 on the tubular shaft 22 wound.

As soon as the fire door 10 has reached its open position, contacts the nose 102 the first limit switch 106 , The first limit switch 106 includes two switches, both of which are normally closed, but open as soon as the nose 102 the first limit switch 106 contacted. Is the first switch of the first limit switch 106 opened, the connection between the rechargeable battery is opened 52 and the motor / generator r interrupted and the motor / generator 68 stops the movement of the fire door 10 in their open position, even if the operator continues, the first switch 44 to operate. The first switch therefore serves as the first limit switch 106 the prevention of excessive drive movement in the opening direction.

The second switch of the first limit switch 106 is usually closed. The operator actuates the first switch 44 , the second switch of the first limit switch 106 a continuous connection between the rechargeable battery 52 and the solenoid 126 for sure. This ensures that when the fire door moves 10 the brake system in its open position 73 is released.

As soon as the fire door 10 has reached its open position, the second switch of the first limit switch opens 106 , An opening of the second switch of the first limit switch 106 leads to a break in the connection between the rechargeable battery 52 and the solenoid 126 , Will energize the solenoid 126 interrupted, so the braking system 73 however reactivated. So that's the braking system 73 activated at the same time as the power supply to the motor / generator 68 is broken and the fire door 10 is moved into its open position. Accordingly, the fire door moves 10 not in their closed position again.

The use of a portable battery 52 for direct current supply is particularly advantageous. As already described above in connection with the discussion of the state of the art, conventionally operated fire protection doors require an AC power supply in order to be opened or closed. This AC power supply is complex to manufacture and install, and long cable runs lead to costs that can far exceed the costs of the actual fire protection door. Furthermore, the solutions known from the prior art have the disadvantage that the AC power supply can be interrupted in the event of a fire and that the emergency services require tools with a separate energy source in order to close them position to open the moving fire door. This handicap of emergency services given by the solutions of the state of the art can lead to loss of life and considerable material damage.

From the representation according to 9 An alternative embodiment variant of the solution proposed according to the invention can be seen. In the in 9 The alternative embodiment shown is a rechargeable battery 100 shown, which is not portable, but rather on or near the housing 24 of the mechanical drive is included. Furthermore, according to this embodiment variant, the first and second control panels comprise 42 . 54 no first and third electrical connection terminals 48 respectively. 16 , However, the functions are for a fire door 10 , as described above, continues to exist. According to the order 9 Service personnel do not need portable batteries 52 to control and operate the fire door 10 ,

On the case 24 of the mechanical drive or in its vicinity can be a charging device 102 to be ordered. The charger 102 is used to provide a low DC charge to the rechargeable DC battery 100 , The charger 102 could be via AC wiring 104 feed with low current. This means that provision of an AC network, which can lead to high currents, leads to the fire protection doors 10 dispensable because the AC network 104 not the actual energy source for operating an AC motor to lift the fire door 10 represents. The AC network 104 is designed for currents with low amperage, which are sufficient, the charging device 102 to supply. The rechargeable DC battery 100 provides the energy needed to operate the DC motor to lift the fire door 10 is required. Whenever possible, the loading device 102 can also be operated via solar cells.

The invention has been described above of the figures described in more detail using specific examples. The proposed according to the invention solution can be changed and designed in different ways.

The fire protection door shown in the figures was shown as a door mounted below the ceiling, the fire protection door comprising slat-shaped elements which are connected to one another and can be rolled up. In the fire protection doors shown in the figures, gravity represents the force which brings the fire protection door into its closed position along the passage or the passage opening. On the other hand, it is also possible to provide a solid, one-piece fire door or a fire door with connected slat elements that are not rolled up (for example, with conventional metal slat garage doors that are not rolled up when the garage door is swung open upwards). Furthermore, the fire door can be accommodated in its open position below the floor or a counterpart. Alternatively, the fire door 10 in their open position in or next to a wall to the side of the passage to be closed. Such doors are known from the prior art and are usually provided with a counterweight or a spring system in order to generate the force which moves the fire protection door into its closed position transversely to the passage. In addition, the claimed solution proposed according to the invention is suitable for enabling the control and operation of doors other than doors which are specifically designed to prevent the spread of smoke and fires.

In the representations according to the 3 to 5 special drives and transmission devices are shown. The solution proposed according to the invention can, however, be realized with various drive means under various configurations of the drives. For example, a more or less strong speed reduction in the transmission can be achieved. For example, the teeth of the gears used can mesh directly with one another, making the use of chains unnecessary. Alternatively, the gears and chains could be replaced with belts and pulleys. The door position detection system does not necessarily have to be with the third shaft 94 be coupled; every shaft within the drive can be used for this. Alternatively, a decoder can be used to precisely detect the rotations of the motor / generator 68 and to derive the position of the fire door from this.

As shown 6 is a special version of a brake system 73 refer to. Within the framework of the solution proposed according to the invention, however, different types of brake systems can be used. For example, it is not necessary that the lever 114 must be pivoted for activation. A lever could also be used 114 imagine that can be moved back and forth to activate or deactivate the braking system. Furthermore, the entire brake system could be replaced by another type of brake system. For example, a pawl arrangement could be used to keep the fire door moving 10 to prevent. The first and / or the second spring element 118 or 120 could simply be replaced by elastic strips, band springs or other pretensioning elements. This in 4 The electrical circuit diagram shown can be modified in many ways without departing from the main idea of the present invention. There are many ways of connecting the various electrical elements to one another connect to realize operation of a fire door control system according to the present invention. For example, a microprocessor can also be used for control. Relays or timers can be associated with the first and second switches 44 or 76 are used so that the operator does not have to continuously operate the respective switches to end a specific operation.

The limit switches can be replaced by potentiometers or an optical decoder shaft. The second limit switch 108 , which activates the creep speed, can be configured by different limit switches, which are each connected to different resistance circuits. According to this procedure, the regenerative braking, which is imprinted on the fire door, can be adjusted depending on the movement of the fire door during closing. Thus, by setting a lower resistance value in the feed circuit during the closing of the door, the braking effect can be increased, so that the dynamics of the door movement are adapted and the door closes essentially at a uniform speed. The figures show a motor / generator 68 which is arranged in a common housing, the motor / generator 68 being a common shaft 130 contains. It can also be provided that the motor is arranged separately from the generator. In this case, the motor and generator can each supply energy or be supplied with energy, which can be done via a common drive shaft or what can be represented via different drive shafts. The figures also have a rechargeable battery 52 refer to. It is perfectly conceivable that the second terminals 50 the rechargeable battery 52 are specifically designed to provide an electrical connection to the first connection point 48 the first control panel 42 manufacture. So the characteristics of the rechargeable battery 52 are designed to be essentially those of a rechargeable battery for use in a portable tool, such as a drill battery. Such rechargeable DC batteries are commonly used by service personnel.

The operation of the present invention is in connection with a first control panel 44 described. Of course, operation can also be done via the second control panel 54 respectively. Finally, it is also conceivable that only a single control panel is provided on one or both sides of the wall, if desired.

Summary

The invention relates to a device with a brake actuator for releasing a brake when the brake actuator is moved; An extensible link is provided which assumes a normal length and an elongated length upon exertion of an external force thereon, the link comprising a first end connected to the brake actuator and a second end connected to a fire condition detector is connectable. The second end is released in the event of a fire notification condition. The brake actuator releases the brake when the fire condition detector releases and moves the second end of the link so that the brake is released when the connector takes on its elongated length but does not release the brake when the link is normal length and the second end of the connection via the fire condition detection device is not released. A magnetic coil ( 126 ) is provided, which contains a movable plunger, the movable plunger transmitting the external force to the connection, so that the connection takes on its extended length and thereby a movement of the brake actuator to release the brake ( 73 . 71 ) triggers.

( 1 )

Claims (41)

A device comprising: a brake actuator for releasing a brake when the brake actuator is moved; an extensible connection which assumes a normal length and an extended length when an external force is exerted thereon, the connection comprising a first end which is connected to the brake actuator and a second end which is connectable to a fire condition detection device, which releases the second end in a fire indication condition and the brake actuator releases the brake when the fire condition detector releases and moves the second end of the link so that the brake is released when the link takes on its stretched length , but does not release the brake if the connection is of normal length and the second end of the connection is not released via the fire condition detection device; a magnetic coil ( 126 ), which contains a movable plunger, the movable plunger transmitting the external force to the connection, so that the connection takes on its stretched length and thereby a movement of the brake actuator to release the brake ( 73 . 71 ) triggers. Device according to claim 1, characterized in that the connection has a chain with a fixed length and a spring, which in series with a fusible connection element ment is switched. Device according to claim 1, characterized in that the magnetic coil ( 126 ) is supplied with direct current. Device according to claim 1, characterized in that it has a handle ( 62 ) with which an operator exerts an external force on the connection regardless of the magnetic coil ( 126 ), so that the connection takes on its stretched length, causing the brake actuator to move to release the brake ( 71 . 73 ) triggers. Device according to claim 1, characterized in that the fire condition detection device has a fusible link, which with excessive heat winding separates. Device according to claim 5, characterized in that the fire condition detection device has an approvable support, which approves an approval for excessive smoke triggers. Facility containing:  a door which an open first position and a closed second position takes and the one Force is placed in its second position; a releasable Locking with the door connected to hold them in their first position; one with the door connected drive, the drive moving the door from its second into its first position and the drive a first electrical Connection point for receiving a second electrical connection element a portable power supply. Device according to claim 7, characterized in that the force pushing the door into its second Position represents by the weight of the door. Device according to claim 7, characterized in that the releasable locking device comprises a brake which holds the door in its first position and a device which detects heat or smoke development and which detects the brake ( 71 . 73 ) releases so that the door moves to its second position in response to excessive heat or smoke. Device according to claim 9, characterized in that the heat or smoke detection device has a fusible connecting element, which with excessive heat development separates. Device according to claim 7, characterized in that the drive is a DC drive and its first electrical terminal is a second electrical Terminal of a portable power supply in the form of a DC battery having. Device according to claim 7, characterized in that a spring element is connected to the door is what stores potential energy when the door moves from the second to the first position and the spring element force to the Door transfers so that the door is placed in its second position. Device according to claim 7, characterized in that the drive with the door via gear elements connected is. Facility containing:  one door, one open, first position and a closed, second position and over a force is placed in its second position; a deactivable Locking the one with the door connected to hold them in their first position; on with the door connected drive, which moves the door from its second into its first position; a first connected to the drive Connection terminal and a portable power supply with one second connection terminal for connection to the first connection terminal. Device according to claim 14, characterized in that the drive is a DC drive and the portable power supply is a rechargeable DC battery includes. Facility containing:  one door, one open, first position and a closed, second position and over a force is placed in its second position;  a deactivable Locking with the door connected to hold them in their first position;  one DC powered drive connected to the door, the Drive the door from her second to her position;  a rechargeable DC power supply connected to the drive and  a charger that works with the rechargeable DC power supply connected is. Device according to claim 16, characterized in that the charging device via alternating current or solar energy is supplied and the charger the rechargeable DC power supply charges. Facility comprehensive: a door that occupies an open, first position and a closed, second position with a force that places the door in its second position; a deactivatable latch connected to the door to hold it in its first position; a drive connected to the door which moves the door from the second position to the first position and a generator connected to the door, movement of the door from its first to its second position causing the generator to generate energy. Device according to claim 18, characterized in that the drive and the generator are arranged in a common housing and a common shaft ( 130 ) having. Device according to claim 18, characterized in that power can be supplied to the drive, such that the drive exerts a force on the door that pushes the door into its first position and generates a braking force to slow down the movement of the door from their first position to their second position. Device according to claim 20, characterized in that in an electrical connection between the generator and the drive circuits are included, wherein the circuits variable resistors to adjust the one Motor fed Have level of performance so that the level of braking force which from the drive to the door exercised is adjustable. Device according to claim 20, characterized in that the electrical connection between the generator and the drive circuits, with a Switch and a resistor, such that a first level of performance fed to the drive when the switch is not activated and a second level of performance fed to the drive which exceeds the first power level when the switch is activated so that the braking force level generated by the drive is increased. Device according to claim 22, characterized in that the switch is a pressure activated Has switch, which is added to a leading end of the door is. Device according to claim 22, characterized in that the switch in the closed state is activated and that closing the switch creates a short circuit to the resistor. Device according to claim 22, characterized in that the switch at least during one predetermined path section of the door from its first position is activated in its second position. Device according to claim 25, characterized in that the predetermined path section the door before the second position is reached through the door so that the braking force the about the Drive generated increases while the door reached their second position. Device according to claim 26, containing:  one connected to the drive and dependent on the drive rotatable gear; one connected to the gearbox with one Threaded shaft;  a sleeve with one formed thereon Nose, the sleeve with the one with the external thread provided shaft cooperates, with a rotation of the gear in a first angular direction a movement of the sleeve along with the external thread provided shaft in a first longitudinal direction causes and a rotation of the transmission in a second angular direction a movement of the sleeve in a second longitudinal direction causes and the switch is arranged next to the shaft, so that the nose the switch while the movement of the sleeve activated along the shaft. Device according to claim 27, characterized in that the switch is a first switch and has a second switch which is arranged next to the shaft so that the nose ( 102 ) activates this as soon as the door reaches its first position and the second switch switches off the drive. Device according to claim 18, characterized in that electrical performance of a display supplied is, so that a visible or audible, the movement of the door of their first position in its second position signal is generated. Device according to claim 18, characterized in that the door in its first position is stored in rolled up condition. Device according to claim 18, characterized in that the deactivatable locking a Has fire condition detection device which the deactivatable Lock releases, allowing the door to respond to the presence of excessive heat or smoke is moved to its second position. Device according to claim 31, characterized in that the fire condition detection device has a fusible connecting element, which with excessive heat development separates. Device according to claim 32, characterized in that the fire condition detection device has a releasable support ( 104 ), which releases in response to excessive smoke. A device comprising: a door that occupies an open, first position and a closed, second position with a force that places the door in the second position; a deactivatable locking device which is connected to the door so that the door is held in its first position, the deactivating locking device comprising: a brake actuator for releasing a brake when the brake actuator moves; - A stretchable connection which takes a normal length and a stretched length when an external force acts on it, the connection having a first end which is connected to the brake actuator and a second end which is connected to a fire condition detection device which releases the second end when a fire indicating condition occurs; - The brake actuator activating the brake ( 71 . 73 ) executes when the fire condition detection device releases the second end of the connection and a release movement of the brake ( 71 . 73 ) executes when the connection takes up its steered length, but with the normal length of the connection the brake ( 71 . 73 ) does not release and the second end of the connection is not released by the fire condition detection device; A generator connected to the door, wherein the movement of the door from the first position to the second position causes the generator to generate energy; A drive connected to the door, the drive moving the door from its second position to its first position; - The drive has a first connection terminal and - A portable power supply has a second connection terminal for connecting the first connection terminal. Device according to claim 34, characterized in that the drive and the generator are accommodated in a common housing and a common shaft ( 130 ) exhibit. Device according to claim 34, characterized in that power is supplied to the drive, in such a way that it exerts force on the door, which the door in their first position and a braking force to delay the Movement of the door from their first to their second position. Device according to claim 34, characterized in that the drive is a DC drive and the portable power supply is a rechargeable DC battery includes. Device according to claim 37, characterized in that a DC-operated solenoid ( 126 ) contains a movable plunger and the movable plunger exerts an external force on the connection so that it takes on its stretched length and thereby a movement of the brake actuator to release the brake ( 71 . 73 ) exercises. Device according to claim 34, characterized in that the door is a fire-resistant door. Device according to claim 34, characterized in that the door is roller-shaped. Device according to claim 34, characterized in that the the fire condition detection device contains a fusible link, which with excessive heat separates and has a releasable support, which releases if there is excessive smoke.